单项选择题

The purpose of compressing the air within the cylinder of a diesel engine is to （）

A.produce the heat for ignition
B.decrease injection lag
C.increase ignition delay
D.aid in exhausting burnt gases

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单项选择题

A.low sulfur content in the fuel
B.a loose injector inlet connection
C.late fuel injection
D.high injection pressure

单项选择题

A.Shape of the piston crowns
B.Increasing the compression ratios
C.Increasing the piston crowns
D.Increasing the turbocharger gear ratio

单项选择题

A.Spark plug
B.Heat of compression
C.Carburetor
D.Glow plug